Home » Search

About database

41-50 of 200Refresh
Manual
14

Defining a JPA Entity Class

To be able to store Point objects in the database using JPA we need to define an entity class ... (annotated) as having the ability to represent objects in the database. Conceptually this is similar ... , and accordingly, provides the ability to store Point objects in the database and retrieve Point
Manual
13

UPDATE SET Queries in JPA/JPQL

. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide ... the database, UPDATE queries do not retrieve data from the database, but when executed, update the content of specified entity objects in the database. Updating entity objects in the database using
Forum
13

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds ... any way to speed-up open time for big databases? Definitely, it's too long for 500 Mb database! We gonna work with ObjectDb databases which may have size more than 5Gb and opening database time
Issue
13

Database access error , Doctor hanging on trying to repair, production shutdown at our biggest customer

we have a database shutdown, logs are showing: [2017-07-10 21:07:23 #1 store] Database 'F ... : SectionClassifier{2->merger[2699]-missing:1}     on running Doctor it hangs after reading in the database, just ... the database (i.e. it is not a test database but contains useful data) and the Doctor cannot help
Manual
12

JPA Query Structure (JPQL / Criteria)

is that SQL works with relational database tables, records and fields, whereas JPQL works with Java ... rather than just field values from database tables, as with SQL. That makes JPQL more object oriented friendly ... JPQL Query The following query retrieves all the Country objects in the database: SELECT c FROM
Manual
12

Updating JPA Entity Objects

Modifying existing entity objects that are stored in the database is based on transparent ... Once an entity object is retrieved from the database (no matter which way) it can simply be modified in memory ... (); The entity object is physically updated in the database when the transaction is committed
Issue
12

Corrupt database page

Hello, we have encountered an issue, where a page of the database became corrupt. We are wondering ... . All rights reserved. Scanning the database file... ........................ 193MB (total) Analyzing database structure... 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% BTree Value Errors
Issue
12

Can't open replicated database

I have a database running in server mode on port 6136 on server1 and server2. Each server has a replicated copy of the other servers database. I try to open the replicated on one database for a query ... empty state of the database. I inserted a few rows into the databases and still got the error
Forum
12

Corrupted Database or error in ObjectDBExplorer?

Hello, we have problems when we open our Database file with the ObjectDB-Explorer (2.6.8_b8 ... the Database-File? An analysis with the DB-Doctor found no problems.   We observe the error if we try to open ... " -> the expected Ids, but null for the class   any ideas? The data in this database is probably fine
Forum
12

Drop the entire database, Change the schema

I am trying to port and example app to ObjectDb. As part of the tests I drop the database ... to do this with ObjectDb, or is the only way to delete the database file everytime? Thanks You can delete the database ... have two PUs configured which are the same apart from this property, I use one to 'drop' the database